Changes to Senedd constituency boundaries from 2026

View constituency boundary changes:
2026 constituencies   2021 constituencies  

A map of Wales showing the constituency boundaries and five regions for Senedd elections prior to the 2026 reforms.
Source: Institute for Government analysis of DataMapWalesNotes: Prior to the 2026 constituency changes, the Senedd consisted of 60 members. There were 40 constituencies, with one member for each constituency. There were 20 members representing the five regions: North Wales, Mid and West Wales, South Wales West, South Wales East and South Wales Central.Get the dataEmbed Download image
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